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CSV Converter

Convert CSV to JSON or JSON arrays to CSV in your browser. Handy for spreadsheets, imports, and quick data checks.

Format

CSV

Convert CSV to JSON, or convert a JSON array back to CSV. All processing is local.

Conversion direction
Ctrl+Enter to Convert to JSON

Recent Payloads

Payloads you format will appear here for quick access. Stored locally in your browser.

What this tool does

Turn CSV with headers into a JSON array, or export JSON objects back to CSV for spreadsheets and imports.

Privacy

Conversions run on your device. Paste sensitive exports without uploading them.

Use cases

  • Move tabular exports into JSON for APIs or scripts
  • Flatten JSON logs into CSV for spreadsheet review
  • Prototype data transforms before writing code

Troubleshooting

Seeing a row-width warning, or an unfamiliar __parsed_extra property in the output? CSV rows with a different number of fields explains what each case produces and how other parsers read the same file.

Got back far fewer rows than the file appears to contain, or a warning about a quoted field that was never closed? CSV unterminated quoted field covers why one stray quote absorbs every row below it.

Everything landing in one column when you open the file elsewhere? CSV opens in one column covers semicolons, commas, and why a correct file can still display wrongly.